Access Networks interview questions
Access Networks interview questions
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Total Questions: 97
1. Which of this is not a constituent of residential telephone line?
Correct Answer is : A low-speed downstream channel
2. In DSL telco provides these services
Correct Answer is : All of the mentioned
3. The function of DSLAM is
Correct Answer is : Convert analog signals into digital signals
4. The following term is not associted with DSL
Correct Answer is : CMTS
5. HFC contains
Correct Answer is : Both Fibre cable and Coaxial cable
6. Choose the statement which is not applicable for cable internet access
Correct Answer is : Analog signal is converted to digital signal in DSLAM
7. Among the optical-distribution architectures that are essentially switched ethernet is
Correct Answer is : AON
8. StarBand provides
Correct Answer is : Satellite access
9. Home Access is provided by
Correct Answer is : All of the mentioned
10. ONT is connected to splitter using
Correct Answer is : Optical cable
11. What is the purpose of a VLAN in an access network?
Correct Answer is : VLANs help in segmenting broadcast domains to improve network performance.
12. Which of the following is a common method for securing access network connections?
Correct Answer is : 802.1X authentication provides secure access control to network resources.
13. What is the primary function of a DHCP server in an access network?
Correct Answer is : DHCP servers assign IP addresses dynamically to devices on the network.
14. Which technology is commonly used to extend the reach of access networks over long distances?
Correct Answer is : Fiber optics is often used for long-distance access network connections due to its high bandwidth and low latency.
15. What is the purpose of a NAT device in an access network?
Correct Answer is : NAT devices translate private IP addresses to public ones for internet communication.
16. Which protocol is commonly used for remote access to an access network?
Correct Answer is : VPNs are used for secure remote access to access networks over the internet.
17. What is a common method for load balancing in access networks?
Correct Answer is : Round-robin routing evenly distributes network traffic among multiple servers for load balancing.
18. Which technology is commonly used for wireless access networks in residential areas?
Correct Answer is : Wi-Fi is a common wireless technology used for residential access networks.
19. What is the purpose of a proxy server in an access network?
Correct Answer is : Proxy servers cache web content to speed up access and reduce bandwidth usage in access networks.
20. Which of the following is a common method for securing wireless access networks?
Correct Answer is : WPA2 encryption provides strong security for wireless access networks by encrypting data transmissions.
21. What is the maximum range of a standard Ethernet cable in an Access Network?
Correct Answer is : Ethernet cables can transmit data up to a maximum range of 100 meters before signal degradation.
22. Which of the following is not a commonly used Access Network technology?
Correct Answer is : CDMA is a mobile communication technology, not typically used in Access Networks.
23. What is the purpose of a MAC address in an Access Network?
Correct Answer is : MAC addresses are used to uniquely identify devices on a network for communication purposes.
24. Which of the following Access Network technologies provides the highest data transfer speeds?
Correct Answer is : Fiber Optics offer the highest data transfer speeds among the listed technologies due to its high bandwidth capacity.
25. Which of the following is a characteristic of a Point-to-Point Access Network topology?
Correct Answer is : In a Point-to-Point topology, each network node is directly connected to every other node, creating a mesh-like structure.
26. What is the main function of a DHCP server in an Access Network?
Correct Answer is : DHCP servers automatically assign IP addresses to devices on the network, simplifying network configuration and management.
27. Which of the following is a key benefit of using a dual-band router in an Access Network?
Correct Answer is : Dual-band routers offer improved Wi-Fi coverage by operating on both 2.4GHz and 5GHz frequency bands.
28. What is the purpose of a NAT in an Access Network?
Correct Answer is : Network Address Translation (NAT) allows multiple devices on a private network to share a single public IP address by translating private IPs to public IPs.
29. Which of the following Access Network components is responsible for converting digital data into analog signals for transmission?
Correct Answer is : A modem is used to modulate digital data into analog signals for transmission over analog communication lines in an Access Network.
30. Which of the following is a common protocol used for secure remote access to an access network?
Correct Answer is : SSH (Secure Shell) is commonly used for secure remote access to network devices.
31. What is the function of a DHCP server in an access network?
Correct Answer is : A DHCP server assigns IP addresses to devices dynamically to enable network communication.
32. Which of the following is a characteristic of a passive optical network (PON) technology?
Correct Answer is : PON technology uses a shared fiber infrastructure to connect multiple subscribers.
33. What is a VLAN (Virtual Local Area Network) used for in an access network?
Correct Answer is : A VLAN segments network traffic to improve security and performance by isolating groups of devices.
34. Which of the following is a common type of broadband access network technology?
Correct Answer is : DSL is a common broadband access technology that uses existing telephone lines for high-speed internet access.
35. What is the purpose of a NAT (Network Address Translation) in an access network?
Correct Answer is : NAT allows multiple devices on a private network to share a single public IP address for internet access.
36. Which of the following is a common method of securing wireless access networks?
Correct Answer is : WPA2 is a common security protocol used to secure wireless access networks by encrypting data.
37. What is the role of an access point in a wireless access network?
Correct Answer is : An access point connects wireless devices to a wired network, enabling wireless communication.
38. Which of the following is a common method of providing secure remote access to an access network?
Correct Answer is : A VPN provides secure remote access to an access network by encrypting data transmitted over the internet.
39. Which of the following protocols is commonly used for secure remote access to an access network?
Correct Answer is : SSH provides secure remote access to network devices.
40. What is the purpose of a DHCP server in an access network?
Correct Answer is : DHCP servers assign IP addresses to devices dynamically on a network.
41. What is the purpose of VLANs in an access network?
Correct Answer is : VLANs segment network traffic for security and performance reasons.
42. Which of the following is a characteristic of a passive optical network (PON) in access networks?
Correct Answer is : PONs use a shared fiber optic infrastructure to connect multiple subscribers.
43. What is the purpose of NAT (Network Address Translation) in an access network?
Correct Answer is : NAT allows multiple devices to share a single public IP address for internet access.
44. Which of the following is a key advantage of using fiber optic cables in access networks?
Correct Answer is : Fiber optic cables offer high bandwidth and low signal loss, making them ideal for access networks.
45. What is the purpose of QoS (Quality of Service) in an access network?
Correct Answer is : QoS prioritizes certain types of network traffic for better performance in an access network.
46. Which of the following is a common method for securing wired access networks?
Correct Answer is : 802.1X authentication is a common method for securing wired access networks.
47. What is the maximum data rate supported by the DOCSIS 3.1 standard?
Correct Answer is : DOCSIS 3.1 supports a maximum data rate of 10 Gbps.
48. Which modulation scheme is used in the 802.11ac Wi-Fi standard?
Correct Answer is : 802.11ac Wi-Fi standard uses Orthogonal Frequency Division Multiplexing (OFDM) modulation.
49. What is the range of frequencies used by the LTE wireless standard?
Correct Answer is : LTE wireless standard uses frequencies in the range of 850 MHz to 1900 MHz.
50. Which protocol is used for secure remote access to a network over an unsecured network like the internet?
Correct Answer is : SSH (Secure Shell) is used for secure remote access over unsecured networks like the internet.
51. What is the purpose of a DHCP server in an IP network?
Correct Answer is : DHCP server assigns dynamic IP addresses to devices on the network.
52. What is the function of ARP in a network?
Correct Answer is : ARP resolves MAC addresses to IP addresses for communication within a local network.
53. Which OSI layer is responsible for establishing, maintaining, and terminating connections between devices?
Correct Answer is : The Session Layer is responsible for establishing, maintaining, and terminating connections between devices.
54. What is the primary function of NAT in a network?
Correct Answer is : NAT translates private IP addresses to public IP addresses for internet communication.
55. Which of the following is a common feature of a VLAN?
Correct Answer is : VLANs provide separate broadcast domains within a network for improved security and performance.
56. What is the function of a network switch in a LAN environment?
Correct Answer is : A network switch filters and forwards data based on MAC addresses within a LAN environment.
57. Which protocol is commonly used for assigning IP addresses in an access network?
Correct Answer is : DHCP is commonly used for dynamic IP address assignment.
58. Which wireless encryption protocol is considered the most secure for access networks?
Correct Answer is : WPA3 is the latest and most secure wireless encryption protocol.
59. What is the purpose of a gateway in an access network?
Correct Answer is : A gateway connects different networks together.
60. Which technology is used to extend the reach of access networks without laying additional physical cables?
Correct Answer is : Powerline communication extends network reach using existing electrical wiring.
61. What is the primary function of a network switch in an access network?
Correct Answer is : A network switch forwards data packets between devices on the same network.
62. What is the purpose of Quality of Service (QoS) in an access network?
Correct Answer is : QoS is used to prioritize network traffic for better performance.
63. Which technology is commonly used for remote access to corporate networks over the internet?
Correct Answer is : VPN technology is commonly used for secure remote access to corporate networks.
64. Which of the following is a common security measure implemented in access networks?
Correct Answer is : MAC address filtering restricts network access based on device MAC addresses.
65. What is the purpose of VLANs in access networks?
Correct Answer is : VLANs segment network traffic to improve performance and security.
66. Which protocol is commonly used for remote access to enterprise networks over the internet?
Correct Answer is : VPN provides secure remote access to enterprise networks over the internet.
67. What is the primary function of a NAT device in an access network?
Correct Answer is : NAT devices translate private IP addresses to public IP addresses for internet communication.
68. Which technology is used to extend a local area network (LAN) over a wide area network (WAN)?
Correct Answer is : SD-WAN technology extends a LAN over a WAN for improved connectivity and performance.
69. In the context of access networks, what does the term 'last mile' refer to?
Correct Answer is : The 'last mile' refers to the final segment of the network connecting to end-user premises.
70. Which encryption protocol is commonly used to secure wireless access networks?
Correct Answer is : WPA2 encryption protocol is commonly used to secure wireless access networks.
71. What is the purpose of an access control list (ACL) in network security?
Correct Answer is : ACLs filter network traffic based on defined rules to enhance network security.
72. Which network device is responsible for directing data packets between different networks in an access network?
Correct Answer is : Routers are responsible for directing data packets between different networks in an access network.
73. What is the maximum data rate supported by the DOCSIS 3.1 standard for cable access networks?
Correct Answer is : DOCSIS 3.1 standard supports up to 10 Gbps, making option B the correct answer.
74. Which of the following technologies is used for fiber-to-the-home (FTTH) access networks?
Correct Answer is : GPON (Gigabit Passive Optical Network) is commonly used for FTTH deployments.
75. What is the purpose of a CMTS in a cable access network?
Correct Answer is : CMTS (Cable Modem Termination System) manages and routes data traffic in cable access networks.
76. In an Ethernet passive optical network (EPON), what is the maximum downstream data rate per subscriber?
Correct Answer is : EPON typically offers a downstream data rate of up to 1 Gbps per subscriber.
77. Which technology is commonly used for wireless access networks in industrial IoT applications?
Correct Answer is : LoRa (Long Range) technology is often used in industrial IoT for long-range, low-power communication.
78. What is the primary function of a DSLAM in a DSL access network?
Correct Answer is : DSLAM (Digital Subscriber Line Access Multiplexer) aggregates and multiplexes DSL user traffic.
79. Which of the following is a key advantage of Ethernet-based access networks over traditional TDM-based networks?
Correct Answer is : Ethernet networks generally offer lower latency compared to TDM-based networks.
80. What is the function of a BNG (Broadband Network Gateway) in a broadband access network?
Correct Answer is : BNG authenticates and authorizes subscriber connections in broadband access networks.
81. Which technology is commonly used for last-mile access networks in rural areas with limited infrastructure?
Correct Answer is : Satellite technology is often used in rural areas for last-mile connectivity where other options are limited.
82. Which of the following is a characteristic of a Passive Optical Network (PON)?
Correct Answer is : PON uses a shared fiber infrastructure to connect multiple subscribers.
83. What technology is commonly used in access networks to provide high-speed internet access over existing copper telephone lines?
Correct Answer is : DSL (Digital Subscriber Line) technology enables internet access over copper lines.
84. In a cable access network, what is the function of a CMTS (Cable Modem Termination System)?
Correct Answer is : CMTS manages cable modems and facilitates internet connectivity in a cable network.
85. Which technology is used in LTE networks to provide wireless access to the internet?
Correct Answer is : Orthogonal Frequency Division Multiple Access (OFDMA) is used in LTE for wireless internet access.
86. What is the main advantage of using SDN (Software-Defined Networking) in access networks?
Correct Answer is : SDN offers centralized control and management, improving network efficiency.
87. What is the purpose of a BNG (Broadband Network Gateway) in access networks?
Correct Answer is : BNG manages subscriber authentication and IP address assignment in access networks.
88. Which network topology is commonly used in access networks to connect multiple devices to a central switch?
Correct Answer is : Star topology is commonly used in access networks for centralized connectivity.
89. Which protocol is used in Ethernet Passive Optical Networks (EPON) for upstream data transmission?
Correct Answer is : Time Division Multiple Access (TDMA) is used in EPON for upstream data transmission.
90. What is a characteristic of a DOCSIS (Data Over Cable Service Interface Specification) network in cable access?
Correct Answer is : DOCSIS enables high-speed data transmission over cable TV networks in cable access.
91. Which technology is commonly used in access networks to provide high-speed internet access to users?
Correct Answer is : DOCSIS is a common technology used for high-speed internet access in access networks.
92. Which of the following is a common authentication protocol used in access networks for secure access?
Correct Answer is : 802.1X is a common authentication protocol used for secure access in access networks.
93. What is the purpose of a MAC address in the context of access networks?
Correct Answer is : MAC addresses uniquely identify network devices in access networks.
94. Which of the following is a common encryption protocol used in access networks to secure data transmission?
Correct Answer is : WPA2 is a common encryption protocol used for securing data transmission in access networks.
95. Which of the following technologies is used to extend the reach of access networks without laying new cables?
Correct Answer is : Powerline Communication extends network reach without new cables in access networks.
96. What is the purpose of a proxy server in the context of access networks?
Correct Answer is : Proxy servers act as intermediaries for client requests in access networks.
97. Which of the following is a common method used in access networks to provide remote access to internal resources securely?
Correct Answer is : VPNs are commonly used in access networks for secure remote access to internal resources.
